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I am afraid we need to see this finished soon. Hurry up chap!
Home made MTB tandem - It made it to the pub! - Pics page 4
- Thread starter s1monf
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Interesting project, be good to see latest progress.
A mate of mine has a home made 3 seater trandem. Made with numerous bike frames and a steel box section joining all the BB's to add strength (and weight). It weighs about the same as the QE2 and handles much the same. Road use only, wouldn;t like to try it off road. The wheels wouldn't last long anyway as only uses 'standard' MTB wheels (have you seen the price of strong tandem wheels :shock: ), it is very much a budget build 'pub' bike. Usually does 'Bristol's biggest bike ride'. Even moderate hills on the road can have the spokes popping if to much power is put through them, but then it is often subject to 3 big powerful (and heavy) 15st blokes. It is a giggle though and does attract a lot of attention.
A mate of mine has a home made 3 seater trandem. Made with numerous bike frames and a steel box section joining all the BB's to add strength (and weight). It weighs about the same as the QE2 and handles much the same. Road use only, wouldn;t like to try it off road. The wheels wouldn't last long anyway as only uses 'standard' MTB wheels (have you seen the price of strong tandem wheels :shock: ), it is very much a budget build 'pub' bike. Usually does 'Bristol's biggest bike ride'. Even moderate hills on the road can have the spokes popping if to much power is put through them, but then it is often subject to 3 big powerful (and heavy) 15st blokes. It is a giggle though and does attract a lot of attention.
thecannibal
Retro Guru
Mark90":6q2n5ds9 said:
About 4 years ago I saw you guys on BBBR and had a chat, possibly outside a pub. I now also own a triplet
Wanna race?
bonkersbuilder
Old School Hero
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Hi I have so far built 3 tandems from similar frames to the ones you have selected only difference being the removal of the rear diagonal and adding in a single diagonal from headtube to rear bb and beefing up the bottom tube to 30mm or therabouts in thin tube i also hacked out the front bb and replaced it with a tandem ecentric one for chain adjustment (it also includes a stub to fit the bottom tube over ) by a really nice company caled haydens in birmingham if they still exist.
my 2 road tandems ran 32 hole 700c and did a couple of london to brightons and stuff as well as about 600 normal miles before the rear wheel rim just gave up, no trouble with it since upping to a 36 hole.
the off roader was a pair of old cro mo peugots with cheap triple clamps and a stack of car valve springs to increase the load bearing (including the bike we must have exceeded 40 stone) and it hapily did drop offs and bombholes at speed,never had a problem with bottom bracket height set at about 14" on both and 175 cranks made for me by l&m, stardrives with a 30 tooth leftside link chain, timed together.
hope some of this helps encourage you !
ps the reason i changed from your current configuration to a single diagonal is whilst on test with new lx v brakes at 20 mph the headtube flexed enough to let the front tyre hit the frame and my stoker ended up sitting on the roof of a landrover (stationary luckily lol)
cheers
Darren
my 2 road tandems ran 32 hole 700c and did a couple of london to brightons and stuff as well as about 600 normal miles before the rear wheel rim just gave up, no trouble with it since upping to a 36 hole.
the off roader was a pair of old cro mo peugots with cheap triple clamps and a stack of car valve springs to increase the load bearing (including the bike we must have exceeded 40 stone) and it hapily did drop offs and bombholes at speed,never had a problem with bottom bracket height set at about 14" on both and 175 cranks made for me by l&m, stardrives with a 30 tooth leftside link chain, timed together.
hope some of this helps encourage you !
ps the reason i changed from your current configuration to a single diagonal is whilst on test with new lx v brakes at 20 mph the headtube flexed enough to let the front tyre hit the frame and my stoker ended up sitting on the roof of a landrover (stationary luckily lol)
cheers
Darren
thecannibal":1bruelgx said:About 4 years ago I saw you guys on BBBR and had a chat, possibly outside a pub. I now also own a triplet
I could have been there, some years I'm on it some times not. And yes it does tend to spend plenty of time outside pubs
Race?? Usually when we finish BBBR everyone else has packed up and gone home. Something to do with the pubs I think
Frame has been welded!!!
Ok, it's been a long time coming but the frame has finally been welded by a mate's mate at work and he looks to have done a great job.
A quick mock up build and a few bounces on the boom bar suggest that it's pretty solid....
Ok, it's been a long time coming but the frame has finally been welded by a mate's mate at work and he looks to have done a great job.
A quick mock up build and a few bounces on the boom bar suggest that it's pretty solid....
Attachments
Groundoggy
Retro Guru
Impressive. That pilot's seat tube looks like a tricky union.
Test ride complete
Just taken it for it's first ride - 3.7 miles to the pub on the road and 3.2 miles back off road with a bit of dutch courage!
Neither of us stopped laughung for the entire trip.
Either way it was enough to convince us that we should strip the frame back and get some paint on it and some matching components.
If you ignore what we had in the garage to start with, it currently stands us at £26!
Our only issue is designing a chain tensioner for the sync chain which kept slipping a link and forced the cranks out of alignment.
We will stick with running the sync chain on the granny with 42 & 32 tooth outer rings I think but we'll replace the 22T inner with a 26 or 28.
Pedalling is much harder than we imagined - certainly not twice as easy.
The frame felt very stiff vertically but a little bit bendy bus in the bends.
Initial thoughts re the theme is army camo paint with brown finishing kit and military decals.
Any suggestions re the paint or the chain tensioner would be welcome.....
Just taken it for it's first ride - 3.7 miles to the pub on the road and 3.2 miles back off road with a bit of dutch courage!
Neither of us stopped laughung for the entire trip.
Either way it was enough to convince us that we should strip the frame back and get some paint on it and some matching components.
If you ignore what we had in the garage to start with, it currently stands us at £26!
Our only issue is designing a chain tensioner for the sync chain which kept slipping a link and forced the cranks out of alignment.
We will stick with running the sync chain on the granny with 42 & 32 tooth outer rings I think but we'll replace the 22T inner with a 26 or 28.
Pedalling is much harder than we imagined - certainly not twice as easy.
The frame felt very stiff vertically but a little bit bendy bus in the bends.
Initial thoughts re the theme is army camo paint with brown finishing kit and military decals.
Any suggestions re the paint or the chain tensioner would be welcome.....
