I can't thank you enough for this. I emailed Standard today and they said they can do it custom so I needed the specs.
I had the same thought on the weight for the small guys. I bought him an 18" DK and it weighed 24.5 lbs.
Both my race and park 24s weigh less which is crazy.
That is when I found him a 16" but he is rapidly outgrowing it so I figure I will pass it to his 6 year old brother who is currently riding a 15 lb Redline 16" racing pit.
The funny thing is your 18" weighs the same as the Mirraco 16" which is aluminum.
I wish I could find somebody that did custom aluminum as that might be the way to go.
I will hit up J&R on the wheels.
I don't have your skills (or time) to do it myself but agree it is worth it.
Thanks again for the info. We are in Celebration Florida so we may see you at the SPot some time. You should bring him over to Vans for bike night one time.
We are there most Tuesdays and Thursdays.
QUOTE (dperalta @ Sep 20 2010, 11:10 AM)
I built the frame myself. The tubing is .035 wall chromoly, 1 1/4" toptube, 1 3/8" down tube and 5/8" for the back half. I cut the dropout from 3/16" chromoly plate. I am not a weldor by trade but I have a tig and am somewhat proficient with it. I chose to modify a light DK race for by shortening it and making new dropouts for it since my son is 9 and I am sure it's more than up to the task. It weighs about 1.5 lbs compared to about 2.5 lbs for the 18" forks that come on most completes.
His friend has a really nice Fit PRK18 and we weighed that frame @ around 5.5 lbs.
18" top tube
12.5" chain stays 3/8 dropouts.
ht angle 74deg
st angle 72deg
bb height 1 5/8"
weight 3lbs 10oz.
Integrated headtube and externally butted seat tube.
Total cost of materials around $80.00
Time in the garage to build the frame about 3 days.
J&R stocks the rims and will cut spokes if you want to build your own wheels. If not I'm sure they'll be happy to build a set for you. Tires on the other hand can be very hard to find. For cranks, unless you can get a set off of one of the import completes, you will have to buy profiles. I had a few Profile spindles and bottom brackets laying around so I just had to buy a set of 150mm arms with they keep in stock. A set of morphine 6.5" expert bars fit the bill perfectly.
He got a few hours in at the skatepark last night and all I can say is without this bike he would not be able to ride the way he does and would not enjoy it at all. Try to throw around a 75lb Wallmart clunker @ the skatepark and you'll have some idea what it's like for an 80lb kid to ride a 25lb bike.
it took me 3 days in the garage to build the frame alone but it's absolutely worth it when I see him ride it.