denisesewa

the swingarm is a stock gas gas swingarm , I plan on shortening it 1 inch since its designed for an 18 inch wheel and I am using a 17 inch wheel. The spokes showed up today so I laced up the 17 inch rim and mounted the tire, tomorrow I'll get the front wheel, brake and tire finished up.

Sorry for the late response, notifications dont seem to be working . There is no real reason other than I am using the wheels that were on the TTR , I had installed a KX 100 fork and front wheel on the TTR so am using the front wheel on this bike ( 19 inch), The rear hub from the TTR will be used with a 17 inch rim, these are the same size wheels and tires the GAS GAS Rookie / Cadet/ and 2015 TXT pro 80 use , I have the tires on hand just not mounted yet. As an update, I got a few more things done the past couple days, fabricated/ reconfigured a brake pedal, that was a bigger job than expected due to having to clear the kicker and since for now I am using the drum brake from the TTR I didnt want to change anything on the frame so I have the option of going to Hydro's later when I find a decent deal on a rear hub/brake setup, turned out decent if not goofy looking. Adapted the Beta fork to the Frame, had to shorten the headstock and remachine bearing race pockets, this offered an opportunity to offset the pockets ( same effect as eccentric bearing sets) and induce a change in the rake so the geo is getting close. ( just getting the forks "properly" mounted helped the geo a bit) Made a plug( mold shape) for the airbox and lower half of the gastank , took a mold casting for the top half of the gas tank in preparation for making the carbon parts. machined a spigot for the carb along with a bunch spacers and bushings for the wheels. From one of these couplers - Machined to a carb spigot -

Thanks for all the helpful info ! Looks like I will shoot for about 24 degrees and somewhere around 60 mm trail. going to internally shorten the forks a bit to gain some on the head angle, since it has a 19" front wheel I can get away with less travel. No board tracks around here , it was just a project and kinda a cool townie bike. Lineaway - Hopefully I will give a new life to your old frame, we'll see.

Thank you for the replies , the forks are trials forks with offset triple clamps, both gas gas and Beta used these Paoli forks in the 90's, they will have slider guards, I had to move the brake caliper to the rear to accommodate the KX wheel and caliper which makes it look like an MX fork. I do have trials tires, just waiting for spokes to arrive so I can lace the rear wheel to a new rim and then mount the tires. motor mounts are engaging the swingarm pivot bolt and the front stays are as original to this frame just moved forward, this frame did not have stays attached to the headstock. original 93 gas gas gt- I do have trials experience and have owned several from twinshocks to a Fantic Section as the latest model on which I got hurt bad enough to have to step out of trials comps, the intended purpose of this bike is to have a challenging winter project and something fun and different to ride while observing or minding . out of my crappy little workspace I have built some decent items including an electric trials bicycle which is fun but power delivery is a bit harsh. Video of maiden ride - And a little board track racer So I do intend to build this into a viable trials bike which functions and looks decent, with a little advise such as headtube angle and observations and opinions It'll happen. Seems odd that geometry of modern bikes is so closely guarded by manufacturers . Again, Thank You for your replies.

Well, I dont have a nice shop, just a little 100 year old shed , it is what it is. just thought someone might offer some useful info * about the bike* . O-well

I started a winter project , purchased a roached 93 GG GT 160 frame, subframe and swingarm , a Paoli USD Beta fork and 96 JT shock, the doner bike is a 2003 TTR 125, while waiting for the parts to arrive I rebuilt the engine with BBR 150cc kit, performance clutch and have a stock flywheel as well as a lightened one and a CRF 150 carb and will be converting to hydro clutch as well a fabricating carbon bodywork , airbox and tank. The idea is to have a little thumper with trials geo ( I hate the TTR geo) and I needed a long term project. So far I have cut the frame up to accommodate the engine fabbed up new engine mounts and tack welded it back together ( 1st pic), after assembling enough parts to "see what I have" I realized the fork angle doesnt seem/look right( about 74 degrees) and the wheel base is longer than expected ( 1346 mm), (2nd pic) , after lifting the rear wheel 2 inches off the ground and compressing the forks 1 inch the fork angle looks better, ( 3rd pic) .searching the web hasnt provided much info on modern trials head tube angle, the present rear wheel is 16 inch and that will get relaced with a 17 inch rim so it may help a bit, I will also extend the slots for the rear axle forward to help shorten the wheel base. If I have to remove and reinstall the headtube I would like to have actual specs for angle so I would appreciate any specs from a late model bike, thoughts, insight and constructive criticism are welcome. ( Yes I know I could have just bought a bike but this is as much a project as anything else.