MechMaxx TR90L
A low-cost rammer with an honest force rating for landscapers and homeowners. The warranty is short.
Amazon $1,399$1,399
The MechMaxx TR90L is the better plate compactor overall, rated 3.3 to 3.0. The Stark 61009 Jumping Jack costs $549.05 less ($849.95 vs $1,399).
Stark 61009 Jumping Jack
A cheap, heavy rammer for occasional trench and footing work. Stark does not publish its impact force.
Amazon $849.95$849.95
Prices were last checked November 3, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every jumping jack rammers plate compactor; a clear win is highlighted. How we rank explains each one.
| Factor weight | MechMaxx TR90L | Stark 61009 Jumping Jack |
|---|---|---|
| Overall rating | 3.3/5 | 3.0/5 |
| Value 30% | 68 $518.15 per 1,000 lbf ($1,399, 2,700 lbf credited) | 50 force not published (neutral score used) |
| Force 25% | 44 2,700 lbf | 50 force not published (neutral score used) |
| Plate 10% | 74 147 sq in (11 x 13.4 in) | 76 148 sq in (11.4 x 13 in) |
| Build 15% | 40 wheel kit included | 50 engine and accessories not published (neutral score used) |
| Warranty 20% | 33 1-year warranty | 0 warranty not published, scored as none |
Specifications
| MechMaxx TR90L | Stark 61009 Jumping Jack | |
|---|---|---|
| Compaction | ||
| Claimed force | 2,700 lbf | - |
| Credited force | 2,700 lbf | - |
| Plate or shoe | 11 x 13.4 in | 11.4 x 13 in |
| Blows per minute | 680 bpm | - |
| Engine | ||
| Engine | Loncin 168F-2H 196cc | 196cc |
| Power | 6.5 hp | 6.5 hp |
| Build | ||
| Wheel kit included | Yes | - |
| Weight | 180 lb | 213 lb |
| Warranty | 1 year | - |