Sling 4: Rear Seat Modifications for Parachute

[@JonMulveyGuitar]

Great clip! A must-see for sling builders installing the BRSP

[@Officer_Boat]

You have the sling 4, non TSi, correct? If so, I’m trying to gain some understanding on a question. Why pick the 4 over the TSi and vice versa? Apart from speed and fuel consumption, their performance seems nearly identical. What drives someone to pick one over the other? (I’m cheap and I would opt for the 4, I don’t see the tradeoff of more speed being worth my extra $20k)

[@jetshine9985]

You’re correct, I have a Sling 4, but I started my project before the TSi was available. Speed and climb performance are the major improvements between the two, from having the extra horsepower with the 915iS. You could compare it to buying the same car in two different trim levels. If you check out my blog (see link in the description), I did a comparison of costs between the 914UL engine (Sling 4) and the 915iS engine (Sling TSi), and I talk a little about the difference between the 4 and TSi too. In summary, about $20k to get extra 15-20 knots cruise speed.

[@Officer_Boat]

@@jetshine9985 Thanks for the response. Just found the channel today, I like what I see, good job. Anyways. The advertised numbers I’ve seen are 100 fpm climb more on the TSi. Not a big deal to me, I don’t mind a little extra time to altitude, and with both being turbocharged, it sounds like getting off the ground and obstacle clearance is hardly a concern. I figure, even with the higher speed on the TSi, you burn more fuel on it than the 4 on an identical trip, not a lot maybe 5-10%, but still more. And at the end of the day you have nearly identical useful load. I’m not trying to bash the TSi, it seems like a truly phenomenal aircraft, I just don’t understand the hype. I want to, but I don’t understand it. Is it as simple as like you said in people are just trimming out the “higher trim level on the car” argument? Anyways, I’ll definitely check your blog out and drop a sub. Thanks guy.