Floont wrote:Thanks for the comments (flames) gents!
I am happy with the outcome and that is all that counts.
PS At least I ditched my Huffy.
I don't think these are flames. I think that there is some honest concern about the capabilities of your bike at the speeds you seem to prefer. As you posted your bike here, those concerns are the things people start commenting on.
Of course, it all depends on how you intend to use your bike. If it is all on good asphalt roads without potholes, you would not even have to worry about a fully. However, most of us do encounter one or more potholes, therefore good suspension can be a life saver.
I would definitely take the comments about the front suspension seriously. Not many bike suspension forks are built to withstand the forces of a pothole at 50mph for more than a couple of times and last. So, yes, you can perfectly drive around at those speeds and hit a pothole, and your front fork will deal with it. However, you are risking that after the 10th or 20th pothole, the stanchions break, and you do a superman over the handlebar. It is up to you to decide whether to take that risk or not. Note also that Andje is one of the people here on ES who has actually built and driven 50mph+ ebikes. Take his comments seriously!
About too much weight... it is not about the static weight on your bike. You need to take into account how the weight moves when you hit that famous pothole. Although the front-rear balance of the weight may be correct, when hitting a pothole, the unsprung weight in front and rear behaves differently as compared to the suspended weight of you + controller on the frame. Your motor can take that hit if laced well (you did have it laced by a pro, right?). The main concern with your lipos attached to the lower stanchions of your front fork is really about the front fork stanchions breaking at high speed and you doing a superman. At 30S2P we are talking about 10kg extra unsprung weight on the front fork. Now, most front wheels are around 2-4kg, depending on the materials used (hub, spokes, rim, tyre). That is what front fork stanchions usually have to deal with in terms of unsprung weight, as the rest is really captured by the suspension. You just multiplied that 5-fold.
You can be happy now (hakuna matata), but the advice is to look just a little bit ahead into the future (supermaaaaannnnn)
I have been there. I started
out with a crappy Chinese Ebike frame, modding it with a dual HT3525/9C2810 config + 30S2P. I posted it here on ES and got similar comments as you did. I continued buying second hand Fox shocks, and finally moved everything over to an XC real mountain bike. Now in the progress of building an even stronger bike based on a Stinky. As I commute every day at 40mph+, safety is a high priority for me.