CG125 OHV Build Oddessy
- Thread starter Erskine
- Start date
Erskine
Over 1,000 Posts
Re: CG125 Decaf - Wtf is my nipple?
Hmm Bit embarrassing though. But I did get a nice old mtx tacho for a fiver and the guy chucked in the nipple for free. I can now finish the snagging in my sub zero garage this evening. Few little welding jobs to do on the chair tomorrow then
Hmm Bit embarrassing though. But I did get a nice old mtx tacho for a fiver and the guy chucked in the nipple for free. I can now finish the snagging in my sub zero garage this evening. Few little welding jobs to do on the chair tomorrow then
Erskine
Over 1,000 Posts
Re: CG125 Decaf - Wtf is my nipple?
Thought I better treat it to some new rear shoes and the back brake will be required to actually provide some kind of stopping power.
I'm quite pleased with the shortened, tucked in brake lever and that I managed to align the footrest with the main sidecar mount on the other side AND the kick starter swing with 1mm clearance.
Save one nut to shave down to a half nut to lock the top mount strut it's ready for the bolt up. Friday?
Thought I better treat it to some new rear shoes and the back brake will be required to actually provide some kind of stopping power.
I'm quite pleased with the shortened, tucked in brake lever and that I managed to align the footrest with the main sidecar mount on the other side AND the kick starter swing with 1mm clearance.
Save one nut to shave down to a half nut to lock the top mount strut it's ready for the bolt up. Friday?
Erskine
Over 1,000 Posts
Re: CG125 Decaf - Too much everything.
Too much toe in (sortable) too much slope in on chair (kind a sortable) too much lean out ('kin confusing). A bit too flippy unladen! Trigonometrical head mash with the way the main diagonal is mounted to the tube. I left 1" of upward slide.
But after a brief test it was pressed straight in to service hauling water as the -10 freeze had kind of buggered up all the taps and there were quite a few thirsty animals.
On balance pretty chuffed though
Too much toe in (sortable) too much slope in on chair (kind a sortable) too much lean out ('kin confusing). A bit too flippy unladen! Trigonometrical head mash with the way the main diagonal is mounted to the tube. I left 1" of upward slide.
But after a brief test it was pressed straight in to service hauling water as the -10 freeze had kind of buggered up all the taps and there were quite a few thirsty animals.
On balance pretty chuffed though
crazypj
Split personality, I fake being smart
Re: CG125 Decaf - Too much everything.
;D ;D ;D ;D
Fun isn't it!
What size wheel in on chair?
If it's already 17" not much you can do, but, if it's a 19" or 21" it looks like you could just swap for a C50/70/90 wheel and lower platform an inch or so, changing lean out, etc (or a shorter/softer shock?)
How much water were you carrying, that looks like 75gal?
That should have squashed sidecar suspension flat
Told you you would do dumb shit with it ;D
;D ;D ;D ;D
Fun isn't it!
What size wheel in on chair?
If it's already 17" not much you can do, but, if it's a 19" or 21" it looks like you could just swap for a C50/70/90 wheel and lower platform an inch or so, changing lean out, etc (or a shorter/softer shock?)
How much water were you carrying, that looks like 75gal?
That should have squashed sidecar suspension flat
Told you you would do dumb shit with it ;D
Erskine
Over 1,000 Posts
Re: CG125 Decaf - Too much everything.
Bloody brilliant!
Having slept on it I arrived at the solution you've suggested but in a different way ........
I remembered there was a second mounting point for the chair shock.
This has bought the chair nearly upright.
Big improvement.
Then I put the bike rear shock preload from bottom to second from highest.
Another improvement.
Later on I shall reset the toe in at 10mm and set the bike dead up right.
Would too much toe in contribute it to being tippy?
Bloody brilliant!
Having slept on it I arrived at the solution you've suggested but in a different way ........
I remembered there was a second mounting point for the chair shock.
This has bought the chair nearly upright.
Big improvement.
Then I put the bike rear shock preload from bottom to second from highest.
Another improvement.
Later on I shall reset the toe in at 10mm and set the bike dead up right.
Would too much toe in contribute it to being tippy?
crazypj
Split personality, I fake being smart
Re: CG125 Decaf - Too much everything.
Not usually, centrifugal loading makes it want to either lift rear wheel (on right handers) or go upside down on left.
Toe in is for turning/straight line stability.
Toe out will hurt you, too much toe in will make it difficult to steer.
I think I would have bike leaning in instead of leaning out, shortening the diagonal's should cure that
Leaning out is usually set when you don't have any suspension on chair.
Just take it slow so you can bail when it goes over ;D
Not usually, centrifugal loading makes it want to either lift rear wheel (on right handers) or go upside down on left.
Toe in is for turning/straight line stability.
Toe out will hurt you, too much toe in will make it difficult to steer.
I think I would have bike leaning in instead of leaning out, shortening the diagonal's should cure that
Leaning out is usually set when you don't have any suspension on chair.
Just take it slow so you can bail when it goes over ;D
Erskine
Over 1,000 Posts
Re: CG125 Decaf - Too much everything.
Bike set vertical, toe in 8mm, may end up giving it a little lean in as the new shocks are softly sprung - got them before the sidecar arrived on the scene.
Put some ballast in it and number plate on, and bimbled around the lanes until hypothermia set in. Found the rear brake was the tool for steadying things up. Got it up to about 20 mph (very bad road conditions) and it went along quite nicely
Frozen to the core now but grinning!
Bike set vertical, toe in 8mm, may end up giving it a little lean in as the new shocks are softly sprung - got them before the sidecar arrived on the scene.
Put some ballast in it and number plate on, and bimbled around the lanes until hypothermia set in. Found the rear brake was the tool for steadying things up. Got it up to about 20 mph (very bad road conditions) and it went along quite nicely
Frozen to the core now but grinning!
Erskine
Over 1,000 Posts
Re: CG125 Decaf - Too much everything.
I've been playing with the lean out ( reducing) a little more, and have it vertical but as soon as the bike rear suspension is loaded the lean out comes back again.
I am going to experiment with mounting the whole chair a little higher on the bike, ie main centre mount above rear engine mount eye rather than below it, this would have the same effect as mounting a 17" chair wheel in place of the 18" that is on it.
It's interesting how acutely aware of road camber (lack of it/off camber etc) you become.
crazypj said:
I've been playing with the lean out ( reducing) a little more, and have it vertical but as soon as the bike rear suspension is loaded the lean out comes back again.
I am going to experiment with mounting the whole chair a little higher on the bike, ie main centre mount above rear engine mount eye rather than below it, this would have the same effect as mounting a 17" chair wheel in place of the 18" that is on it.
It's interesting how acutely aware of road camber (lack of it/off camber etc) you become.
Erskine
Over 1,000 Posts
Re: CG125 Decaf - Too much everything.
I've had some great little rides on the bike now and am becoming more confident on side slopes off road and have tweaked it further to improve road manners. Went on a decent amble around with a passenger, and it gave the best most balanced ride so far. On long hills I had to keep the gears low and the revs up in the mid zone, but sure enough it got us everywhere.
I'm getting ready to swap back over to the original frame for the MOT in 2 months time, right now I don't have the budget for the bureaucracy but I've done all the hard work so it'll be very easy to do when the finances allow.
I've had some great little rides on the bike now and am becoming more confident on side slopes off road and have tweaked it further to improve road manners. Went on a decent amble around with a passenger, and it gave the best most balanced ride so far. On long hills I had to keep the gears low and the revs up in the mid zone, but sure enough it got us everywhere.
I'm getting ready to swap back over to the original frame for the MOT in 2 months time, right now I don't have the budget for the bureaucracy but I've done all the hard work so it'll be very easy to do when the finances allow.
