Optimist model 1 Total aluminium body, light weight.
Shimano gear set total 18 speed Front- 3, Rear - 6. 6*3=18 speed
Two levers- One with push button to ascend the gears.
Aluminium body light weight.
Wall tube is same as we have to motor vehicles, Hand pumps are not for these tube, but you can fill air at any garage or electric air pump, or just change the tube it will cost Rs 70/- to Rs 80/-.
Shimano front shifter All shifters are painted so wont rust
Bottom dillerer is made of fiber which may be not that efficient
These are V breaks same as fire fox bike has, much better than Indian breaks.
Manual is of no use as it is in chineese language. You can also visit www.optimist.com i.e., also in chineese language.
Optimist - model 2 Both side suspensions are there rest features are same as Chineese- Optimist single suspension mentioned ahead
HMG Bike Model 3 Handle and rims are of Aluminium rest iron body. Both front and rear suspensions
Suspensions work same as Firefox bikes.
18 speed gear set. 6 in rear and 3 in front 6*3= 18 speed.
brand of gear set unknown. And lower dillerer is made of fiber.
Gear Lever.
Front view
Long front suspension enhances durability in terrain.