Its likely that the bike has a lazy seat angle. So when a long seat post is in there. The seats quite far back
Ive built a 15" boys MTB. Its got 20 X 175, 3 speed alloys. Ive got a shopper bike seat pin in there. Not a raleigh one, just a regular 25.4mm Oh its a 6 speed bike. 2 chainrings to the 3 speed hub
