That's a 44% difference in speed!
I know you had a power hub on the vendetta, but have you any power meter on the Softrider?
I know that my average speed (No power meter!) went from 20 kph to 25 kph on 100 km flat rides, when going from Schwalbe Marathon (406*1.5") + to greenspeed Scorcher (406*1.5") on a trike!
My sofrider sits on the kickr trainer. No nil on road power meter for the sofrider.
marathons are unexpectedly not that slow. Marathon plus are very slow. Scorchers are fast but wear even faster. There is a rolling resistance test site that rated the marathon faster than the kojak. Kojaks must have sucked a lot of round lollipops.
I run marathons and now marathon racers on the hurricane. Again the marathons are rated faster than the racers. My experience was I can’t tell. Racers are lighter.
on my trike I run big apples. I also have marathon plus tyres for it but they are so heavy. I anecdotally say the big apples are approx 4 klm per hour faster than marathon plus. At Cruise speed. On this gto trike.
On the fernleigh track out and back the fastest average klm/ hr I went on greenspeed gto catrike 700 df wonder bike and vendetta were.
27.3. 33.7. 35.6 and 39. Note the track has a long climb which I was faster on with df.
Tyres were big apples. Conti contact gp 4000s x 2. Weights kg 17.5 13.8 7 and 11.3
the power was around 270 watts avg. with roadie catrike and vendetta with hub power meters. I still have two power meters but don’t worry about them these days. These speeds were some six years ago.
so is the sofrider slower than the greenspeed ? no it is not even with marathon plus.
I am slower . The sofrider is a heavy indestructible beast. But with some fast tyres I think she would get along close to 30 at cruising speeds. I’m in no rush pardon the pun to find out. I think it’s as fast as my hurricane which is close to the roadie.
The sofrider and hurricane are my suspended training bikes. Ahhh
the pelso audax bike ,the v speed machine ,the gto tourer relax bike. Sold the catrike.
seriously considering s40 as retirement bike present to self........it could replace the hurricane gto and brevet. Selling point -2 for cfo approval.
so yeah tyres etc etc affect speed. 44% on an individual bike no. Maybe 15-20%.
Plus when you drag out a super fast bike you have to go fast. Very on a v. It’s all in the head.