Conquiztador
2nd October 2008, 21:50
Thanks to all that helped with the zd90 I bought.
For those that have no idea: My then 6yo wants to ride motox. Badly. But the bike I had for him was not up to it (a 90cc with clutch, his hand is not strong enuf to pull the clutch), so I was looking for something that he could use and get some more experience on before I have to spend the $1,5K on a 50cc KTM.
I found this chink zd90 that had no compression. But it has a 3 gear box with no clutch. Got it for $120. After some checking I realised that all it needed was a set of rings. The motor is a chink copy of a Honda CT90. But when I went to the local Honda shop they lost interest when I told them it was a Chinese thingy. After some chatting on here and help, I ended up contacting Econo Honda. I sent them the piston and 3 days later I had it all back with a set of CT 90 rings. All up $54.
I got some more help here re how to gap the rings properly as they were overlapping. In the end I just did the "fuck it, close will be fine" and filed them down. Including the oil rings.
All sorted for today, my sons B'thday. OK, so the thing smokes a little. But I am hoping that as the rings settle it will be sorted. If not, so what? The idea is to get him to use gears and get comfy at a little speed with a heavier bike. This thing has a 3 gear box w/o clutch. And almost impossible to find neautral. But thats what U get for the small change.
I just wanted to thank the ones who have given me input as I have sorted this. Thanks guys! I have a very happy 7yo. Apart from the bike I gave him a helmet and goggles today. And when he is at his mums this w/e he will get a set of those fancy see through body armours and a set of xboots.
Maan...why did I not have parents like this!!!
For those that have no idea: My then 6yo wants to ride motox. Badly. But the bike I had for him was not up to it (a 90cc with clutch, his hand is not strong enuf to pull the clutch), so I was looking for something that he could use and get some more experience on before I have to spend the $1,5K on a 50cc KTM.
I found this chink zd90 that had no compression. But it has a 3 gear box with no clutch. Got it for $120. After some checking I realised that all it needed was a set of rings. The motor is a chink copy of a Honda CT90. But when I went to the local Honda shop they lost interest when I told them it was a Chinese thingy. After some chatting on here and help, I ended up contacting Econo Honda. I sent them the piston and 3 days later I had it all back with a set of CT 90 rings. All up $54.
I got some more help here re how to gap the rings properly as they were overlapping. In the end I just did the "fuck it, close will be fine" and filed them down. Including the oil rings.
All sorted for today, my sons B'thday. OK, so the thing smokes a little. But I am hoping that as the rings settle it will be sorted. If not, so what? The idea is to get him to use gears and get comfy at a little speed with a heavier bike. This thing has a 3 gear box w/o clutch. And almost impossible to find neautral. But thats what U get for the small change.
I just wanted to thank the ones who have given me input as I have sorted this. Thanks guys! I have a very happy 7yo. Apart from the bike I gave him a helmet and goggles today. And when he is at his mums this w/e he will get a set of those fancy see through body armours and a set of xboots.
Maan...why did I not have parents like this!!!