Thinking about a bent/trike
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Re: Thinking about a bent/trike
Postby Joeblake » Tue Dec 06, 2011 9:56 pm
Hohohohoho
Joe
Bertrand Russell
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Re: Thinking about a bent/trike
Postby Baalzamon » Sun Dec 18, 2011 10:50 pm
Well there it is. Front wheel will be changed to a dynamo setup tho so gotta acquire spokes n hub for that, I have the rim already
Took it down for a spin in a car park after the shops had closed for the day. Found cornering much much easier than I thought, starting is going to take heaps of practice tho After about 1.5km my right foot started to BURN The ball of my big toe was where it was concentrated. Yes I was clipped in using spd and shoes that I had fitted for my Thorn Raven Nomad. I am suspecting a cleat change may be required...
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Re: Thinking about a bent/trike
Postby CommuRider » Sun Dec 18, 2011 11:55 pm
Looked like this
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Re: Thinking about a bent/trike
Postby Joeblake » Mon Dec 19, 2011 1:11 pm
Even after a couple of decades of "benting" I still get burning on the sole. I've got clips and straps so I just slip my foot out and rest it on the bottom of the pedal for a short while, as I coast along.Baalzamon wrote: After about 1.5km my right foot started to BURN The ball of my big toe was where it was concentrated. Yes I was clipped in using spd and shoes that I had fitted for my Thorn Raven Nomad. I am suspecting a cleat change may be required...
Nice looking machine.
Joe
Bertrand Russell
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Re: Thinking about a bent/trike
Postby }SkOrPn--7 » Mon Dec 19, 2011 1:36 pm
Ricky
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Re: Thinking about a bent/trike
Postby Baalzamon » Mon Dec 19, 2011 1:59 pm
Putting it on my Tacx Fortius tonight, going to be shooting for 95-100 cadence and doing laps on a virtual velodrome to see if grinding is causing the foot pain. Each night I'll be on the trainer a bit doing a few km's to see if I've figured it out, or if I have get my legs used to it as I'm still commuting on my regular bike.
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Re: Thinking about a bent/trike
Postby Phil » Mon Dec 19, 2011 2:00 pm
Looks very nice indeed.
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Re: Thinking about a bent/trike
Postby Baalzamon » Tue Dec 20, 2011 1:04 am
Moved seat a lil closer, had cadence 88+. Still could feel my foot in the same position. Going to play it by ear over the next few days, may move seat in a lil closer but I'm inclined to change my cranks. They are 175mm and might drop them to 165mm to increase cadence.
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Re: Thinking about a bent/trike
Postby John Lewis » Tue Dec 20, 2011 1:16 am
Congrats on getting the Baccheta all together Baalzamon. It looks very nice.Baalzamon wrote:Got it up on my trainer now.
Moved seat a lil closer, had cadence 88+. Still could feel my foot in the same position. Going to play it by ear over the next few days, may move seat in a lil closer but I'm inclined to change my cranks. They are 175mm and might drop them to 165mm to increase cadence.
Couple of thoughts on the hot foot problem.
1) Tightness of shoe straps. perhaps try loosening them a bit.
2) More of a problem to do but I have heard reports that moving the cleat back quite a bit further can help. If you do that you'll need to readjust the seat position.
I know Stan down hear took to his shoes with a Dremel to get the cleats back where he wanted them.
John
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Re: Thinking about a bent/trike
Postby Baalzamon » Tue Dec 20, 2011 1:21 am
Looking at my shoes, the cleats can be moved quite a bit back. I'll give that a try tomorrow as the pain appears to be forward of where my cleat is. But I'm going to grab the liquid paper and tracing my cleat position first!John Lewis wrote:Congrats on getting the Baccheta all together Baalzamon. It looks very nice.Baalzamon wrote:Got it up on my trainer now.
Moved seat a lil closer, had cadence 88+. Still could feel my foot in the same position. Going to play it by ear over the next few days, may move seat in a lil closer but I'm inclined to change my cranks. They are 175mm and might drop them to 165mm to increase cadence.
2) More of a problem to do but I have heard reports that moving the cleat back quite a bit further can help. If you do that you'll need to readjust the seat position.
I know Stan down hear took to his shoes with a Dremel to get the cleats back where he wanted them.
John
I'm going to be heading into Perth probably on Sat and head to that Milligan st shop and try out their footbed to see if it thinks my current specialized blue insole is enough support or does it want green, or inserts put in.. Might even invest in an e-sole as I do wear orthotics in my regular shoes.
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Re: Thinking about a bent/trike
Postby Kalgrm » Thu Dec 22, 2011 10:31 am
I strongly recommend going to much shorter cranks that the 165s you're considering. You will not even notice a difference with 165s. I got my 145s from these guys, but they are out of stock at the moment. For less than $70 delivered, they are great value.
Cheers,
Graeme
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Music was better when ugly people were allowed to make it ....
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Re: Thinking about a bent/trike
Postby Baalzamon » Thu Dec 22, 2011 10:49 am
Using the quick release clamp couldn't get enough tension so I removed seat so I could get to the other allen bolts. Not noticing any extra resistance and BANG. Seat clamp has snapped. I'm going to see if flyingfurniture can pop one in express post today..
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Re: Thinking about a bent/trike
Postby Kalgrm » Thu Dec 22, 2011 10:55 am
I've never had a problem since.
cheers,
Graeme
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Music was better when ugly people were allowed to make it ....
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Re: Thinking about a bent/trike
Postby Baalzamon » Thu Dec 22, 2011 11:01 am
Yeah I found out afterwards a bit too late... QR clamp = extremely loose and tighten up upper bolts until plastic meets then use QR to tighten.Kalgrm wrote:In the dim and dark distant past, when I first got mine, I also had a problem with the seat moving backwards once. Unfortuantely, I can't remember the solution. I think it had something to do with the order in which the upper and lower bolts had to be tightened. Check the manual or the Bacchetta forum - it might be in there.
I've never had a problem since.
cheers,
Graeme
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Re: Thinking about a bent/trike
Postby bradwoodbr » Thu Dec 22, 2011 2:12 pm
+1 I use 145mm cranks too.Kalgrm wrote:
I strongly recommend going to much shorter cranks that the 165s you're considering. You will not even notice a difference with 165s. I got my 145s from these guys.
Cheers,
Graeme
It does sound very much like and adjustment issue as numbness is in one foot not both.
You are on the right track with seat fore and aft and also seat back angle. Also try different seat pad thickness.
When I got mine perfect I had no more numb foot issue. One or two mm can make a big difference. Record all current measurements and adjust one at a time, recording and testing by spinning it up for 10 or 15 minutes. You have the luxury of rollers so makes your bike fit easier to do. I used to make a seat/boom adjustment then go riding the next day and so on.
Cleat - also check position of your cleat compared to the left right centre of your shoe.
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Re: Thinking about a bent/trike
Postby Baalzamon » Thu Dec 22, 2011 2:20 pm
They are a sight cheaper than this mob Most likely because they are just the cranks and bikesmithdesigns have full cranksets.Kalgrm wrote:Ooh! Very nice! I didn't realise they had a new colour on the current ones. I like it.
I strongly recommend going to much shorter cranks that the 165s you're considering. You will not even notice a difference with 165s. I got my 145s from these guys, but they are out of stock at the moment. For less than $70 delivered, they are great value.
Cheers,
Graeme
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Re: Thinking about a bent/trike
Postby exadios » Thu Dec 22, 2011 7:59 pm
+1.Kalgrm wrote:Ooh! Very nice! I didn't realise they had a new colour on the current ones. I like it.
I strongly recommend going to much shorter cranks that the 165s you're considering. You will not even notice a difference with 165s. I got my 145s from these guys, but they are out of stock at the moment. For less than $70 delivered, they are great value.
Cheers,
Graeme
Mine are 150s. Makes a big difference to cadence and hot foot issues.
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Re: Thinking about a bent/trike
Postby Baalzamon » Fri Dec 23, 2011 1:35 am
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Re: Thinking about a bent/trike
Postby Rhubarb » Fri Dec 23, 2011 8:36 am
I ride 175mm cranks on my DF bike which seem fine but I've never tried anything else. What would suit me on a bent? 175 or something else? Does it depend on the bike design?
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Re: Thinking about a bent/trike
Postby bradwoodbr » Fri Dec 23, 2011 12:07 pm
On Short Wheel Base recumbents, the cranks are shortened to reduce foot/front wheel in terference, to improve cadence and gearing, and to be more comfortable.Rhubarb wrote:Excuse my ignorance of recumbents, but is it "normal" for bents to use shorter cranks than DF bikes ?
I ride 175mm cranks on my DF bike which seem fine but I've never tried anything else. What would suit me on a bent? 175 or something else? Does it depend on the bike design?
This article will start you off into the black art.
http://sheldonbrown.com/cranks.html
Here is another article with a calculator. If you are medium height then somewhere between 165 and 175mm cranks would suit you on your DF.
http://www.recumbents.com/wisil/misc/crank_angle.asp
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Re: Thinking about a bent/trike
Postby exadios » Fri Dec 23, 2011 12:09 pm
Fairly normal.Rhubarb wrote:Excuse my ignorance of recumbents, but is it "normal" for bents to use shorter cranks than DF bikes ?
I ride 175mm cranks on my DF bike which seem fine but I've never tried anything else. What would suit me on a bent? 175 or something else? Does it depend on the bike design?
But it turns out that many people could benefit from shorter cranks on diamond frame bikes as well. The only reason that diamond frame bike riders don't use shorter cranks is that they are not offered the option.
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Re: Thinking about a bent/trike
Postby Baalzamon » Fri Dec 23, 2011 12:15 pm
edit
I do have heel strike issue on my front wheel and this should sort that out as well.
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Re: Thinking about a bent/trike
Postby exadios » Fri Dec 23, 2011 1:36 pm
Sorry. When I said that diamond frame riders don't get the choice I didn't mean to imply that recumbent manufacturers offer a choice. In fact the recumbent manufacturers and retailers I've spoken to are either completely ignorant about this issue or they (metaphorically) roll their eyes. What I should have said is that a recumbent rider, having made the decision to ride a "non standard bike", is open to the suggestion that other parameters may need review and change as well.Baalzamon wrote:I'm running 172.5mm cranks on both my Thorn Raven Nomad and my Masi Speciale CX. The Bacchetta has came with 175mm cranks and I didn't get the option to change them. Looking at the calculator seems to agree 145mm for me since I have a high BB
edit
I do have heel strike issue on my front wheel and this should sort that out as well.
One of the manufacturers that does understand the importance of crank length is Cruz Bike.
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Re: Thinking about a bent/trike
Postby John Lewis » Fri Dec 23, 2011 3:33 pm
I have heel strike issues with my SWB. So long as its not going to be a hard strike as on the pedal or crank it quickly becomes a non issue. I no longer even think about it.Baalzamon wrote: I do have heel strike issue on my front wheel and this should sort that out as well.
I would like to try short cranks though. I think Greenspeed will make short cranks up fromyour existing ones if they are suitable.
John
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Re: Thinking about a bent/trike
Postby Baalzamon » Fri Dec 23, 2011 4:19 pm
Hey JohnJohn Lewis wrote:I have heel strike issues with my SWB. So long as its not going to be a hard strike as on the pedal or crank it quickly becomes a non issue. I no longer even think about it.Baalzamon wrote: I do have heel strike issue on my front wheel and this should sort that out as well.
I would like to try short cranks though. I think Greenspeed will make short cranks up fromyour existing ones if they are suitable.
John
Feel free to try mine when I get eventually get down there.
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